What is the source code of the conn.php file?

Question

a

Answer 1

<?php
/**
* Created by PhpStorm.
* User: Administrator
* Date: 2018/3/26 0026
* Time: 13:40
*/
   define("HOST",'localhost');
   define("USER",'root');
   define("PWD",'root');
   define("DBNAME",'vote');
   $mysqli=new mysqli(HOST,USER,PWD,DBNAME);
   if($mysqli->connect_errno){
       die('数据库链接出错'.$mysqli->connect_error);
   }else{
       echo 1;
   }